You can make this distinct from the sheep by saying “meh-eh-eh-eh” and stuttering the last syllable. I can’t really explain it other than to tell you to bleat. You’ll know when you’ve got it right because the kid will fall over giggling at the face you have to make.
Yup, meh-eh-eh-eh. (that’s more of the imitation of the sound, for notation I might go with the baaaa though)
<Hijack> My mother was sitting in the backeat with my oldest son when he was about a year old on a road trip. She was flipping through an animal book keeping occupied doing the “What does a cow say? Mooo.”
Then she flipped the page and said “What does a rabbit say?..” Silence ensued as my wife and I exchanged glances before bursting out in laughter, and asking “Yeah, GrandMaw, what does a rabbit say?”
Hold on there with the name-calling! Speaking as a person raised in rural Georgia with a mother who farmed registered Toggenburg goats, I’ll give some credance to your na-a-a one of a goat’s vocalizations, usually a forlorn or weary one - heard it many times delivering kids. The meh-eh-eh I think is the more common, everyday vocalization, however.
I may be a no good city slicker (to some degree at least) but isn’t “cluck, cluck, cluck” at least slightly onomatopoeic? If I were asked to do a chicken impression, which granted isn’t a daily occurence, I think I would do something along the lines of “cluck, cluck, cluck, cluckaaaawww” though probably without a very hard ‘k’.
A couple of times when I helped out in preschools/creches, rabbits did actually feature in the Old MacDonald song; there was no sound associated with them, but the kids all had to twitch their noses (or try to). - With a [twitch twitch] here and a [twitch twitch] there…
My favourite thing though, was to throw a spanner in the works by putting in “And on that farm, he had a tortoise…” - stunned silence, then fits of laughter, every time